Road grader



June 13, 1933. 0, HINDS ROAD GRADER Filed May 25. 1931 2 Sheets-Sheet 1mw M MN UrucZZe JYZ'RLZ? f M June 13, 1933. 0. Q. HINDS 1,913,883

ROAD GRADER Filed May 25. 1931 2 Sheets-Sheet 2 j arz/zgws I I l l l l lJ Patented June l3, 1933 UNITED STATES PATENT OFFICE ORVILLE Q. KINDS,OF CHICAGO, ILLINOIS, ABSIGNOR '10 ALLIS-CHALMERS MANU- FACTURINGCOMPANY, 01 MILWAUKEE, WISCONSIN, A CORPORATION OF DELAF,

WARE

non (manna j Application filed Kay 25, 1981. Serial No. 589,748.

My invention relates to road graders. It relates more in particular to aroad grader for cutting a shoulder at the side of a road, while thegrader itself travels on the finished roadway.

The principal object of the invention is to adapt a standard type ofroad grader to perform a new grading function.

Another object is to grade the road shoulder with a road graderemploying the finished road surface as a guide.

Another objectis the provision of an improved mold board attachment.

Another object is to fit a conventional type of grader for cutting aroad shoulder.

Another object is to operate on a very high bank at the side of theroad.

Another object is the provision of an unproved means for mounting a moldboard extension onto the end of a mold board.

Other objects and features of the invention will be apparent from aconslderatlon of the following detail description taken with theaccompanying drawings, wherein Fig. 1 is a side elevational view of aroad grader showing my invention applied there- I Fig. 2 is a plan viewthereof, parts of the grader being indicated schematlcally by dottedlines,

Fig. 3 is an elevational view of the mold board with the extensionapplied thereto and showingone manner in which it may be used Fig. 4 isa sectional view taken along the line 44 of Fig. 2 showing the way theextension is attached to the mold board,

Fig. 5 is an enlarged fragmentary rear elevational view of a part of themold board extension, and

Fig. 6 is a sectional view taken approximately along the line 66 of Flg.5 looking in the direction of the arrows.

In general I employ a. conventional or standard type of road grader withmy invention, such as is usually used for grading operations along aroad right-of-way. While many different specific constructions of roadgrader of this general character can be used with some'success, I prefera road grader of and rear axles 11 and 12, and designed to be shifted toeither side of such axles. The axles have wheels 13 designed to beleaned with respect to the axles. A draw bar 14 is connected by meansofa universal joint 16 to a front post 17 forming a part'of the frameand is suspended from a pair of links 18 adjustable by cranks 19. Athird link 21 has its lower end connected to the draw bar and its upperend adjustable along a transversely disposed track 22. The draw barcarries a circle frame 23 from which a mold board 24 is suspended bymeans of brackets 26.

and 27.

In this type of grader the adjustable elements are power operated from acontinually running internal combustion engine 28, this engine having adrive connection to a gear box 29, whence by means of a plurality ofshifting levers 31, the movement of the engine is transmitted throughshafting, gears and the like to the adjustable element. An operatorsplatform 32 is disposed conveniently adjacent the levers 31, whereby theoperator facing the direction of movement of 1 the grader has theadjustable elements thereof entirely under his control at all times andcan move the grader parts quickly and accurately, due to the use ofmachine power.

I am not primarily concerned in the present invention with theapplication of power,

except to point out thatthe use of power control is an advantage when amold board with the extension arrangement to be described, can becontrolled by means of power. The various power connections, includingshafting and the like are disclosed in a general way in Fig. 1, but fora more particular description thereof those skilled in the art arerebrackets 26 and 27, whereby the mold board is adjustablelongitudinally of its support. This in itself provides for someconsiderable operation of the mold board outside the line of draft ofthe grader, but in addition thereto I provide a mold board extension 34,preferably with a wing extension 36, pivotally connected to theextension 34, and this specific arrangement will now be described.

Fig. 4 is a sectional view taken through the mold board extension andwing extension and shows the manner in which the wing extension issecured in p ace. The mold board 24 has a removable cutting edge 37extending the full length thereof and secured thereto by means of bolts.The extension 34 has a removable cutting edge 38. As Fig. 4 shows, thecutting edge in each instance is in line with the earth engaging face ofthe mold board so as to form a continuous arcuate earth moving surface.This is accomplished by means of the offset 24, which permits thecutting edge 37 to be secured with its front face in line with the frontface of the mold board. In the major portion of the extension 34 thissame construction is employed, but in order to permit the mold board andmold board extension to be nested closely together to obtain the effectof an integral body, the portion 34' (Fig. 6) is missing on the portionof the extension which overlaps the mold'board proper. As Fig. 4 shows,the mold board and mold board extension are then capable of being nestedclosely together and fastening bolts 39 extending through both cuttingedges 37 and 38 aid in holding the parts in firm engagement. I wish topoint out that the openings through which the bolts 39 extend are thesame openings which are employed for securing the cutting edge to themold board. In other words, no special construction of the mold boarditself is required to attach the extension thereto.

I also employ fastening means on the back of the mold board and this isobtained in the following way. The mold board as constructed has areinforcing member 41 in the form of an angle iron. I provide acorresponding reinforcement 42 on the extension, but at 42 where the twomembers overlap the reinforcement on the extension is offset so as tolie over the top of the reinforcement 41 as Fig. 4 shows. Nuts and bolts43 are then employed to inter-connect the two reinforcements. WVhere theoffset portion 42 connects with the main portion 42, a shoulder isprovided v.(Fig. 2) which serves as a stop and value of the extension isenhanced by the use of the wing. Referring now particularly to Figs. 5and 6, a pivot 44 is provided between the wing 36 and the extension 34by means of which the wing can be adjusted, for example to cut a berm asshown in Fig.

As to controlling the adjustment, I provide a segment 46 secured to theextension 34; an adjusting arm 48 is secured to the wing extension bybolts 47 and it has a pawl 49 controlled by a hand piece 51for engagingin slots 52 carried by the segment. By releasing the pawl the wing canbe swung to any one of a number of positions determined by the number ofslots 52, and the pawl allowed to enter a contiguous slot 52 to hold thewing in the position to which it has been moved. It will be understoodthat the pawl 49 can be operated by a suitable spring tending to forceit into the slots when it has been removed therefrom by the actuation ofthe hand piece. The wing 36 is provided with any suitable cutting edgesuch as a removable cutting edge 53.

With a mold board extension of-this character I am able to cut ashoulder in excess of ten feet in width, not including the portion cutby the wing 36. This of course places considerable load on the extremeend of the extension, and, while for some purposes this can be carriedentirely by the grader without the use of auxiliary draft means, I'haveconstructed and use a draft connection to the extreme end of the moldboardextension to facilitate the application of the extension to heavyduty use on the road shoulder. In this connection I provide a draftchain 54 having one end connected to the mold board extension at 56 andthe opposite end connected in a slot in a bracket 57 carried by thefront end of the draw bar. It is seen by this arrangement that I am ableto adjust the mold board and extension to the proper cutting positionand then by pulling the draft chain 54 taut and passing the front endinto the slot on the bracket 57, produce draft means adapted for use,independent of the position of the mold board. That is to say, the draftmeans can readily be adapted to the position in which the mold board iscarried during a grading operation. A draft chain 58 is also providedfor the wing 36, one end being secured to the wing at 59 and the otherend provided with a hook 61, which hook can be dropped into any one ofthe links of the draft chain 54, thus affording adjustable draft meansalso for the wing 36. While I describe 54 and 56 as chains, it isobvious that I can use other flexible draft means such to define theouter limits of the shoulder,

as a steel cable or the like. I prefer the" chain, however, because itis readily handled and is nonextensible, and can easily be repaired incase of injury thereto.

I have found that with this arrangement the grader can be moved alongand operate on a road shoulder under many conditions without making itnecessary to brace the wheels against the load by leaning them or toadjust the weight in any way by leaning the frame. When diflicultgradingconditions are encountered, however, I can loan the wheels aswell as the frame and brace the grader against the work under allconditions. Although the present invention is adapted particularly foroperating on the road shoulder, I find that I can secure very goodresults in cutting an extremely high bank at the side of a road. v Byleaning the frame and adjusting the .wheels properly, the entire moldboard including the extension can be placed in a substantially verticalposition outside the line of draft of tllle wheels, and since theextension will reach up to an extreme height, banks on which it wasimpossible to operate with a grader heretofore can be cut down or gradedoff without difficulty.

The-extension herein described is shown as attached to the right handside of the grader. It is understood that the same construction may beemployed for the left hand side of the grader without modification,except as to modifying the extension. The mold board as normallyconstructed will take an extension on either side when constructed inaccordance with this invention.

There are many advantages in the use of my invention which those in theart will understand readily. One very good feature is in connection withthe use of the wing. The grader wheels can be run along the edge of thepavement, and the wing will then be set without requiring any stakingout. What is claimed is 1. In a road grader, a main frame, a mold boardadjustably carried by the grader bemember therewith, and a wing cutteradj ustably pivoted to the end of the mold board extension.

2. In a road grader, a main frame, a mold board adjustably carried bythe grader below the main frame, a mold board extension secured to themold board at one end thereof so as to form substantially a singlecutting member therewith, a wing cutter adjustably pivoted to the end ofthe mold board extengrader at a point in board.

3. In a road rader, a main frame, a mold board adjustab y carried by thegrader below the main frame, a mold board extension secured to the moldboard at one end thereof advance of the mold so as to form substantiallya single cutting low the main frame, a mold board extension secured tothe mold board at one end thereof so as to form substantially a singlecutting member, a wing cutter adjustably pivoted to the end of-the moldboard extension, and a chain having one end secured to the mold Eboardextension, the other end adjustably se-.

cured to the grader at a point in advance of the mold'board, and asecond chain having one end secured to the wing cutter and the other endadjustably secured to the first mentioned chain. 1

5. In a road grader, amain frame, a draw bar having its front endadjustably secured to the main frame, adjustable suspension meansconnecting the rear end of the draw bar to the frame, a mold boardcarried by the draw bar near the rear end thereof, a mold boardextension secured to one end of the mold board so as to formsubstantially a single cutting member adapted to extend a" relativelygreat distance at the side of the grader, a wing cutter adjustablysupported at the end of the mold board extension, a chain havin one endsecured to the mold board extension, and a bracket secured to the frontend of the draw bar for adj ustably supporting the opposite end of thechain.

6. In a road grader, a main frame, a draw bar having its front endadjustably secured to the main frame, adjustable suspension meansconnecting the rear end of the draw bar to the frame, a mold boardcarried by the draw bar near the rear end thereof, a mold boardextension secured to one end of the inold board so as to formsubstantially a single cutting member adapted to extend a relativelygreat distance at the side of the grader, a wing cutter adjustablysupported at the end of the mold board extension, a chain having one endsecured to the mold board extension, a bracket secured to the front endof the draw bar for adjustably supporting the opposite end of the chain,and a second chain having one end secured to the wing cutter, and theopposite end rovided with a hook for engagement in a lin of the firstmentioned chain.

7. In a road grader, amold board having a main earth moving portionofgeneral arouate cross section, an offset portion along the bottom edgeof said earth moving portion, a cutting edge bolted to the offsetportion and forming a continuous earth moving surface with the mainearth moving portion, and a mold board extension having the same generalconstruction as the mold board, includin the offset portion and cuttingedge, no ofiiet portion of the extension being provided where theextension overlaps the mold board, whereby the mold board and extensionare closely nested to facilitate fastening of the extension to the moldboard.

8. In a road grader, a mold board having a main earth moving portion ofgeneral arouate cross section, an offset portion along the bottom edgeof said earth moving portion, a cutting edge bolted to the offsetportion and forming a continuous earth moving surface with the mainearth moving portion, an angular reinforcement on the back of the moldboard, and a mold board extension having the same general constructionas the mold board, including the ofiset portion and cutting edge, nooffset portion of the extension being provided where the extensionoverlaps the mold board, whereby the mold board and extension areclosely nested to facilitate fastening of the extension to the moldboard, an angular reinforcement on the back of the extensison, and boltssecuring the two reinforcements together.

9. In a road grader, a mold board having a main earth moving portion ofgeneral arcuate cross section, an offset portion along the bottom edgeof said'earth moving portion, a cutting edge bolted to the offsetportion and forming a continuous earth moving surface with the mainearth moving portion, an angular reinforcement on the back of the moldboard, and a mold board extension having the same general constructionas the mold board, including the offset portion and cutting edge, nooffset portion of'the extension being provided where the extensionoverlaps the mold board, whereby the mold board and extension areclosely nested to facilitate fastening of the extension to the moldboard, an angular, reinforcement on the back of the extension, boltssecuring the two reinforcements together, the overlapping portion of theextension reinforcement lying along the mold board reinforcement, andthe non-overlapping portion of the extension reinforcement beingsubstantially in line with the main mold board reinforcement.

10. In a road grader, a mold board having a main earth moving portion ofgeneral arcuate cross section, an offset portion along the bottom edgeof said earth moving portion, a cutting edge bolted to the offsetportion and forming a continuous earth moving surface 7 with the mainearth moving portion, and a mold board extension having the same generalconstruction as the mold board, includin the offset portion and cuttingedge, no 0 set portion of the extension being provided where theextension overlaps the mold board, whereby the mold board and extensionare closely nested to facilitate fastening of the extension to the moldboard, and a wing cutter adj ustably secured to the end of the moldboard extension.

11. In a road grader, a mold board, a mold board extension having itsinner end overlapping and secured to an end of said mold board, a Wingcutter pivoted to the outer end of the extension, a segment secured tothe mold board extension near the point of pivot of the wing, anadjusting arm secured to the wing cutter, and means associated with thearm for engaging the segment to hold the wing in the position to whichit has been adjusted by the arm.

12. In a road grader, a mold board, a mold board extension having itsinner end overlapping and secured to an end of the mold board, a wingcutter pivoted to the outer end of the extension, a segment secured tothe mold board extension near the point of pivot of the wing, anadjusting arm secured to the wing cutter, means associated with the armfor engaging the segment to hold the wing in the position to which ithas been adjusted by the arm, a chain having one end secured to theextension, and having its opposite end adjustably secured to the graderin advance of the mold board, and a second chain having one end securedto the wing cutter, and the opposite end provided with a catch forengaging the first mentioned chain.

In witness whereof, I hereunto subscribe my name this 20th day of April1931.

ORVILLE Q. HINDS.

